Elasticsearch安装

一：下载Elasticsearch安装包并解压

二：进入解压后的elasticsearch目录：

1：新建data目录：mkdir data

2：修改config/elasticsearch.yml

三：后台启动：./bin/elasticsearch -d

Elasticsearch集群用配置文件关联：以三台为例；配置集群只需要更改配置文件中：节点名称，ip地址两个参数

# 注：Elasticserch7.0开始，当一半以上的候选主节点永久丢失，集群将不会自动恢复。
# 在添加或删除节点时，Elasticsearch会自动的通过更新集群的投票配置（voting configuration）来维持最佳的容错级别。
#voting configuration是一组当前可以参与投票的的候选主节点。通常，voting configurations包含集群中所有符合条件的候选主节点。
#所有集群状态的更新都需要有voting configurations中一半以上的节点同意。
# 集群名称
cluster.name: ******
# 节点名称
node.name: node-a-1
# 网络连接地址
network.host: -----ip-------
# 端口
http.port: 9500
# 跨域访问，elasticsearch-head提供检测
http.cors.enabled: true
http.cors.allow-origin: "*"
http.max_content_length: 200mb
#集群通信端口
transport.tcp.port: 9400
#不运行Macos下的es（内部应该有运行xpack）
xpack.ml.enabled: false
#集群中主节点最少设置3个及以上
# 是否设置主节点,默认为true
node.master: true
# 是否允许节点存储数据,默认为true
node.data: true
# 为了避免脑裂，集群节点数最少为 半数（N/2）+1
discovery.zen.minimum_master_nodes: 2
# 7.x版本后，需要注意(cluster.initial_master_nodes，discovery.seed_hosts)
# 从7.0版本开始，如果要启动在多个物理主机上启动一个全新的集群，必须指定参与第一次投票选举的候选主节点。这个过程称为集群启动引导，仅在集群第一次启动时才需要。
# cluster.initial_master_nodes 参数设置一系列符合主节点条件的节点的主机名或IP地址来引导启动集群。
# 注：如果不是候选主节点，则不需要配置此项
cluster.initial_master_nodes: ["node-a-1", "node-a-2", "node-a-3"]
#发现子系统的相关配置以便节点可以互相发现
#自动发现设置，配置之后集群的主机之间可以自动发现
discovery.seed_hosts: ["172.16.70.195:9400", "172.16.70.196:9401", "172.16.70.200:9402"]
#基于文件的自动发现设置，配置之后集群的主机之间可以自动发现。
#discovery.seed_providers对应旧版中的discovery.zen.hosts_provider
#discovery.seed_providers: 文件
#一旦你点击3个节点,倒计时时钟开始,然后集群将在5分钟内恢复(默认值)或者如果你点击5个节点.基本上它允许您设置最小阈值(recovery_after_nodes),
#并使用超时(recovery_after_time)等待所需的状态(expected_nodes).命中recovery_after_nodes后,或者当命中expected_nodes(无需额外等待)时,
#您将恢复recovery_after_time – 以先到者为准.
gateway.recover_after_nodes: 3
gateway.expected_nodes: 5
# 网络参数配置
network.tcp.keep_alive: true
network.tcp.no_delay: true
#设置是否压缩tcp传输时的数据，默认为false，不压缩。
transport.tcp.compress: true
#集群内同时启动的数据任务个数，默认是2个
cluster.routing.allocation.cluster_concurrent_rebalance: 16
#添加或删除节点及负载均衡时并发恢复的线程个数，默认4个
cluster.routing.allocation.node_concurrent_recoveries: 16
#初始化数据恢复时，并发恢复线程的个数，默认4个
cluster.routing.allocation.node_initial_primaries_recoveries: 16
# 索引数据存放的位置
path.data: /opt/cmh/elasticsearch/data
# 日志文件存放的位置
path.logs: /opt/cmh/elasticsearch/logs

 单机版

# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
#       Before you set out to tweak and tune the configuration, make sure you
#       understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
#cluster.name: my-application
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
#node.name: node-1
node.name: node-1
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
path.data: /newdisk/es7/dbdata
#
# Path to log files:
#
path.logs: /newdisk/es7/dblogs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
#network.host: 192.168.0.1
network.host: 0.0.0.0
network.publish_host: 120.120.120.120//这里是你的服务器IP
#
# Set a custom port for HTTP:
#
http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when this node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
#discovery.seed_hosts: ["host1", "host2"]
#
# Bootstrap the cluster using an initial set of master-eligible nodes:
#
node.master: true
node.data: true
#cluster.initial_master_nodes: ["node-1", "node-2"]
cluster.initial_master_nodes: ["node-1"]
#
# For more information, consult the discovery and cluster formation module documentation.
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
#gateway.recover_after_nodes: 3
#
# For more information, consult the gateway module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true
http.cors.enabled: true
http.cors.allow-origin: "*"